问题
while studying, im struggling to find an answer to this question:
What is a generic datamodel?
Are there any alternatives to a generic datamodel, if so; which one would you recommend?
I've looked everywhere to find a decent answer, but i didn't find it. It might be just a very simple question, i just couldn't find these terms; 'generic datamodel'.
回答1:
Perhaps by generic data model you mean an entity attribute value model: EAV on wikipedia
This data model has one table and three columns. It is usually burnt by fire if ever discovered by someone of a database (vs developer) persuasion.
The thing with a data model is that you are modeling something. You are applying your skills to build a database that is optimised to store and retrieve data about something (widgets in a factory, trades on a stock exchange, Facebook posts). A EAV can store all of this stuff but it causes many other problems down the line.
More info here: EAV
回答2:
It could be possible its an EAV mode. But that leaves me with the following question: are there any alternatives to this model?
Thanks.
回答3:
@ nick, this is the question:
- Advise in Chapter 5 of the people involved in your case about the application or not of a generic data model and optionally other alternatives. Motivate your opinion (10 points).
来源：https://stackoverflow.com/questions/27893539/sql-alternatives-to-a-generic-datamodel